﻿
// bencodeTestDlg.cpp: 实现文件
//

#include "stdafx.h"
#include "bencodeTest.h"
#include "bencodeTestDlg.h"
#include "afxdialogex.h"

#ifdef _DEBUG
#define new DEBUG_NEW
#endif


// 用于应用程序“关于”菜单项的 CAboutDlg 对话框

class CAboutDlg : public CDialogEx
{
public:
	CAboutDlg();

// 对话框数据
#ifdef AFX_DESIGN_TIME
	enum { IDD = IDD_ABOUTBOX };
#endif

	protected:
	virtual void DoDataExchange(CDataExchange* pDX);    // DDX/DDV 支持

// 实现
protected:
	DECLARE_MESSAGE_MAP()
};

CAboutDlg::CAboutDlg() : CDialogEx(IDD_ABOUTBOX)
{
}

void CAboutDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialogEx::DoDataExchange(pDX);
}

BEGIN_MESSAGE_MAP(CAboutDlg, CDialogEx)
END_MESSAGE_MAP()


// CbencodeTestDlg 对话框



CbencodeTestDlg::CbencodeTestDlg(CWnd* pParent /*=nullptr*/)
	: CDialogEx(IDD_BENCODETEST_DIALOG, pParent)
{
	m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);
}

void CbencodeTestDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialogEx::DoDataExchange(pDX);
}

BEGIN_MESSAGE_MAP(CbencodeTestDlg, CDialogEx)
	ON_WM_SYSCOMMAND()
	ON_WM_PAINT()
	ON_WM_QUERYDRAGICON()
	ON_BN_CLICKED(IDOK, &CbencodeTestDlg::OnBnClickedOk)
END_MESSAGE_MAP()


// CbencodeTestDlg 消息处理程序

BOOL CbencodeTestDlg::OnInitDialog()
{
	CDialogEx::OnInitDialog();

	// 将“关于...”菜单项添加到系统菜单中。

	// IDM_ABOUTBOX 必须在系统命令范围内。
	ASSERT((IDM_ABOUTBOX & 0xFFF0) == IDM_ABOUTBOX);
	ASSERT(IDM_ABOUTBOX < 0xF000);

	CMenu* pSysMenu = GetSystemMenu(FALSE);
	if (pSysMenu != nullptr)
	{
		BOOL bNameValid;
		CString strAboutMenu;
		bNameValid = strAboutMenu.LoadString(IDS_ABOUTBOX);
		ASSERT(bNameValid);
		if (!strAboutMenu.IsEmpty())
		{
			pSysMenu->AppendMenu(MF_SEPARATOR);
			pSysMenu->AppendMenu(MF_STRING, IDM_ABOUTBOX, strAboutMenu);
		}
	}

	// 设置此对话框的图标。  当应用程序主窗口不是对话框时，框架将自动
	//  执行此操作
	SetIcon(m_hIcon, TRUE);			// 设置大图标
	SetIcon(m_hIcon, FALSE);		// 设置小图标

	// TODO: 在此添加额外的初始化代码

	return TRUE;  // 除非将焦点设置到控件，否则返回 TRUE
}

void CbencodeTestDlg::OnSysCommand(UINT nID, LPARAM lParam)
{
	if ((nID & 0xFFF0) == IDM_ABOUTBOX)
	{
		CAboutDlg dlgAbout;
		dlgAbout.DoModal();
	}
	else
	{
		CDialogEx::OnSysCommand(nID, lParam);
	}
}

// 如果向对话框添加最小化按钮，则需要下面的代码
//  来绘制该图标。  对于使用文档/视图模型的 MFC 应用程序，
//  这将由框架自动完成。

void CbencodeTestDlg::OnPaint()
{
	if (IsIconic())
	{
		CPaintDC dc(this); // 用于绘制的设备上下文

		SendMessage(WM_ICONERASEBKGND, reinterpret_cast<WPARAM>(dc.GetSafeHdc()), 0);

		// 使图标在工作区矩形中居中
		int cxIcon = GetSystemMetrics(SM_CXICON);
		int cyIcon = GetSystemMetrics(SM_CYICON);
		CRect rect;
		GetClientRect(&rect);
		int x = (rect.Width() - cxIcon + 1) / 2;
		int y = (rect.Height() - cyIcon + 1) / 2;

		// 绘制图标
		dc.DrawIcon(x, y, m_hIcon);
	}
	else
	{
		CDialogEx::OnPaint();
	}
}

//当用户拖动最小化窗口时系统调用此函数取得光标
//显示。
HCURSOR CbencodeTestDlg::OnQueryDragIcon()
{
	return static_cast<HCURSOR>(m_hIcon);
}

#include "curl/curl.h"

/******

******/
struct MemoryStruct {
	char *memory;
	size_t size;
};

/*****************

*****/
static size_t WriteMemoryCallback(void *contents, size_t size,
	size_t nmemb, void *userp)
{
	size_t realsize = size * nmemb;
	struct MemoryStruct *mem = (struct MemoryStruct *)userp;

	char *ptr = (char*)realloc(mem->memory, mem->size + realsize + 1);
	if (ptr == NULL) {
		/* out of memory! */
		printf("not enough memory (realloc returned NULL)\n");
		return 0;
	}

	mem->memory = ptr;
	memcpy(&(mem->memory[mem->size]), contents, realsize);
	mem->size += realsize;
	mem->memory[mem->size] = 0;

	return realsize;
}

#define QUERYURL "http://mydear.sinaapp.com/demo/bencoder.php"
#include "../MFCApplication1/support/codecvt.h"
#include "../MFCApplication1/support/Log.h"

bool CbencodeTestDlg::fetch()
{
	char response[256];
	bool retval = false;
	struct MemoryStruct chunk;
	CURLcode res;

	chunk.memory = (char*)malloc(1);  /* will be grown as needed by the realloc above */
	chunk.size = 0;    /* no data at this point */

	CURL *easyhandle = curl_easy_init();
	struct curl_httppost* post = NULL;
	struct curl_httppost* last = NULL;

	char hostname[256] = { '\0' };
	gethostname(hostname, 255);

	curl_formadd(&post, &last, CURLFORM_COPYNAME, "host",
		CURLFORM_PTRCONTENTS, hostname, CURLFORM_END);

	curl_easy_setopt(easyhandle, CURLOPT_HTTPPOST, post);

	curl_easy_setopt(easyhandle, CURLOPT_WRITEFUNCTION, WriteMemoryCallback);

	/* we pass our 'chunk' struct to the callback function */
	curl_easy_setopt(easyhandle, CURLOPT_WRITEDATA, (void *)&chunk);

	curl_easy_setopt(easyhandle, CURLOPT_URL, QUERYURL);
	res = curl_easy_perform(easyhandle); /* post away! */

	/* check for errors */
	if (res != CURLE_OK) {
		//fprintf(stderr, "curl_easy_perform() failed: %s\n", curl_easy_strerror(res));
		//return false;
		//do nothing
	}
	else {

		CString line;

		//std::u16string s = codecvt::utf8_to_utf16(chunk.memory);

		//line.Format(_T("%s"), s.c_str());
		//Log::appendLine(line);
		parseBencode(chunk.memory);
	}

	curl_easy_cleanup(easyhandle);
	curl_formfree(post);
	free(chunk.memory);
	curl_global_cleanup();
	return retval;
}

#include "bencoding.h"

bool CbencodeTestDlg::parseBencode( std::string resp ) {

	// Decode data stored in a std::string.
	auto decodedData = bencoding::decode(resp);
	bencoding::BItem *item = decodedData.get();
	//bencoding::BDictionary *dict = item->as<bencoding::BDictionary>().get();
	//item->as<bencoding::BDictionary>().get();
	item->shared_from_this();
	item->as<bencoding::BDictionary>();
	return true;
}

void CbencodeTestDlg::OnBnClickedOk()
{
	// TODO: 在此添加控件通知处理程序代码
	CDialogEx::OnOK();
	fetch();
}
